The aFe MagnumFORCE Intakes Stage-1 P5R AIS P5R BMW 540i (E39) 97-03 V8-4.4L is an intake system designed to increase airflow and power for BMW 540i (E39) model years 1997-2003 with a V8-4.4L engine. This intake system features a Pro 5R five-layer progressive oiled cotton air filter that provides maximum airflow and performance. The one-piece sealed housing with auxiliary air scoop is designed to provide a smooth, unrestricted path for the air entering the engine. The intake also includes an application-specific heat shield that helps to isolate the air filter from engine heat. This intake system is designed to improve horsepower, torque, and throttle response.